Her husband, 1967 Cheltenham Gold Cup-winning jockey Terry Biddlecombe, says the ground and style of racing most suited to the track are the key elements. "The course and fences at Kempton encourage horses to go off fast and travel at a high cruising speed," he said. "If it's good ground, a horse with doubtful stamina would get the trip. But when it's soft or heavy, horses are still tempted to go that same pace.